ARP Head Stud Kit, BMW M10

The ARP head stud kit for the BMW M10 B18 and B20 engine (1.5L & 2.0L) 4-cylinder, is designed to provide improved clamping force for the cylinder head to the engine block. The kit includes high-strength, heat-treated studs, premium-grade parallel ground washers, and 12-point nuts.

The ARP head studs 201-4601 are made from premium-grade 8740 chromoly steel, which is stronger and more durable than the factory bolts. The studs are heat-treated to 200,000 psi tensile strength and precision-machined to ensure consistent, accurate torque values.

The parallel ground washers included in the kit are designed to distribute the clamping load evenly across the cylinder head, reducing the risk of head gasket failure. The 12-point nuts feature a hardened, parallel-ground washer face and a precision thread-rolling process for consistent, accurate torque values.

Overall, the ARP head stud kit for the BMW M10 engine is designed to provide improved clamping force and reliability for high-performance and racing applications.

Please note: After initial assembly, it is necessary to allow the engine to complete a full heat cycle, then re-torque your head studs to spec. This means allowing the engine to warm up to its normal operating temperature, remain at operating temperature for several minutes to ensure each component is uniformly heated, then turned off and cooled completely to ambient temperature.